/usr/lib/x86_64-linux-gnu/liblibertine.so.1 is in liblibertine1 1.0.0+16.04.20160411-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/liblibertine.so.1.0.0
/usr/lib/x86_64-linux-gnu/liblibertine.so.1.0.0